TC or not TC, that is the question...
Photo.net’s latest technique-based article looks at TCs (teleconverters, multipliers) and their effect on image quality.
“TCs are very useful accessories but they work best when low power TCs are used with high quality prime lenses. If you’re looking to preserve the maximum amount of image quality from your prime lens, use a 1.4x TC and preferably one made by the lens manufacturer. 3rd party TCs can be quite good, especially when used with digital cameras with small sensors since in that case the image quality at the edge of the full 43mm image circle used in full frame 35mm format isn’t seen by the sensor.”